Ell
An ell is a historical unit of length that was commonly used in medieval Europe, especially for measuring textiles and cloth. Its length varied by region but was typically about 45 inches (approximately 1.143 meters).
The ell originated from the length of the arm or forearm and was often used by tailors and merchants to measure fabric. Different countries had their own versions—for example, the English ell was about 45 inches, while the Scottish ell was longer, around 37 inches.
Although obsolete today, the ell played an important role in trade and clothing production before standardized measurements became widespread.
Summary:
1 ell ≈ 45 inches (1.143 meters)
Used mainly for measuring cloth and textiles
Length varied by region and country
The ell is now largely of historical interest but reflects the origins of many modern measurement systems.
Attometer
An attometer (am) is a unit of length in the metric system, equal to one-quintillionth of a meter (1 am = 10⁻¹⁸ meters). This unit is extremely small, even smaller than a femtometer, and is used in theoretical physics to describe distances at the quantum level, such as within particles or in advanced models of spacetime. However, attometers are rarely used in practice because most known physical structures, including subatomic particles, are still larger than this. The attometer mainly appears in scientific equations or hypotheses dealing with concepts beyond current experimental capabilities.
No conversions available for length.